[Kalun D]

I'm guessing in the position of the black circles, just make sure all the flow arrows are oriented as drawn.

You could move the silicone elbow toward the upper circle and even make it straight, and then put a hard line bend where the silicone elbow is now, and put your heater Y off that hard bend. If it's not too much trouble, this would get your heater hoses closer together, maybe more sanitary, don't know what it really looks like though, depends what the heater core looks like too.